The peculiarities of growing sunflower hybrids seeds in the Krasnodar region

The researches were conducted in 2008-2011 on the VNIIMK central experimental station. The reaction of maternal forms of sunflower hybrids Mercury, Prizer, and Hermes for sowing terms (the 3 rd decade of April, the 1 st decade of May, and the 2d decade of May) and density of planting (40, 60, and 80 thousand plants per hectare) was studied. It was determined that the optimal sowing term for hybridization sites of hybrids Mercury and Prizer is the 1 st decade of May and density of planting of 40 thousand plants per hectare, such conditions provide obtaining the maximum productivity and yield of standard seeds. The optimal combination for hybrid Hermes was sowing in the 3d decade of April and density of planting of 40 thousand plants per hectare. The seeds of the first generation of the studied hybrids, received through various combination of sowing terms and density of planting, did not differ in their yielding qualities in progeny. The complete implementation of potential opportunities of hybrid seeds is achieved at hybridity level of more than 90 %.